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Finding the Fourth Proportional to 579,063,976.40, 868,595,964.60 and 488,364,712.40

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Solution

The fourth proportional to 579,063,976.40, 868,595,964.60 and 488,364,712.40 is: 732,547,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,063,976.40 : 868,595,964.60 = 488,364,712.40 : x
  2. Step 2: Convert to fraction form
    579,063,976.40/868,595,964.60 = 488,364,712.40/x
  3. Step 3: Cross multiply
    579,063,976.40x = 868,595,964.60 × 488,364,712.40
  4. Step 4: Simplify right side
    579,063,976.40x = 424,191,618,443,679,552
  5. Step 5: Solve for x
    x = 424,191,618,443,679,552/579,063,976.40
  6. Step 6: Final answer
    x = 732,547,068.60

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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.