Home / 977,948,962.39-1,349,447,075.98-661,098,611.62

Finding the Fourth Proportional to 977,948,962.39, 1,349,447,075.98 and 661,098,611.62

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Solution

The fourth proportional to 977,948,962.39, 1,349,447,075.98 and 661,098,611.62 is: 912,233,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,948,962.39 : 1,349,447,075.98 = 661,098,611.62 : x
  2. Step 2: Convert to fraction form
    977,948,962.39/1,349,447,075.98 = 661,098,611.62/x
  3. Step 3: Cross multiply
    977,948,962.39x = 1,349,447,075.98 × 661,098,611.62
  4. Step 4: Simplify right side
    977,948,962.39x = 892,117,588,385,046,656
  5. Step 5: Solve for x
    x = 892,117,588,385,046,656/977,948,962.39
  6. Step 6: Final answer
    x = 912,233,278.72

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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.