Home / 717,756.38-990,547.87-395,466.39

Finding the Fourth Proportional to 717,756.38, 990,547.87 and 395,466.39

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Solution

The fourth proportional to 717,756.38, 990,547.87 and 395,466.39 is: 545,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,756.38 : 990,547.87 = 395,466.39 : x
  2. Step 2: Convert to fraction form
    717,756.38/990,547.87 = 395,466.39/x
  3. Step 3: Cross multiply
    717,756.38x = 990,547.87 × 395,466.39
  4. Step 4: Simplify right side
    717,756.38x = 391,728,390,271.09
  5. Step 5: Solve for x
    x = 391,728,390,271.09/717,756.38
  6. Step 6: Final answer
    x = 545,767.90

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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.