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Finding the Fourth Proportional to 992,441,479.60, 1,488,662,219.40 and 977,135,978.80

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Solution

The fourth proportional to 992,441,479.60, 1,488,662,219.40 and 977,135,978.80 is: 1,465,703,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,441,479.60 : 1,488,662,219.40 = 977,135,978.80 : x
  2. Step 2: Convert to fraction form
    992,441,479.60/1,488,662,219.40 = 977,135,978.80/x
  3. Step 3: Cross multiply
    992,441,479.60x = 1,488,662,219.40 × 977,135,978.80
  4. Step 4: Simplify right side
    992,441,479.60x = 1,454,625,414,855,999,488
  5. Step 5: Solve for x
    x = 1,454,625,414,855,999,488/992,441,479.60
  6. Step 6: Final answer
    x = 1,465,703,968.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.