Home / 1,186,918,344.42-1,637,931,860.78-678,275,270.34

Finding the Fourth Proportional to 1,186,918,344.42, 1,637,931,860.78 and 678,275,270.34

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Solution

The fourth proportional to 1,186,918,344.42, 1,637,931,860.78 and 678,275,270.34 is: 936,011,041.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,918,344.42 : 1,637,931,860.78 = 678,275,270.34 : x
  2. Step 2: Convert to fraction form
    1,186,918,344.42/1,637,931,860.78 = 678,275,270.34/x
  3. Step 3: Cross multiply
    1,186,918,344.42x = 1,637,931,860.78 × 678,275,270.34
  4. Step 4: Simplify right side
    1,186,918,344.42x = 1,110,968,675,669,053,824
  5. Step 5: Solve for x
    x = 1,110,968,675,669,053,824/1,186,918,344.42
  6. Step 6: Final answer
    x = 936,011,041.44

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Double scale
Find fourth proportional to 1,186,918,345.42, 1,637,931,862.16 and 678,275,271.34
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.