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Finding the Fourth Proportional to 579,219,006.40, 868,828,509.60 and 531,601,892.80

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Solution

The fourth proportional to 579,219,006.40, 868,828,509.60 and 531,601,892.80 is: 797,402,839.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,219,006.40 : 868,828,509.60 = 531,601,892.80 : x
  2. Step 2: Convert to fraction form
    579,219,006.40/868,828,509.60 = 531,601,892.80/x
  3. Step 3: Cross multiply
    579,219,006.40x = 868,828,509.60 × 531,601,892.80
  4. Step 4: Simplify right side
    579,219,006.40x = 461,870,880,221,963,008
  5. Step 5: Solve for x
    x = 461,870,880,221,963,008/579,219,006.40
  6. Step 6: Final answer
    x = 797,402,839.20

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Double scale
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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.