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Finding the Fourth Proportional to 692,660,368.61, 955,966,410.36 and 424,688,811.38

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Solution

The fourth proportional to 692,660,368.61, 955,966,410.36 and 424,688,811.38 is: 586,128,869.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,660,368.61 : 955,966,410.36 = 424,688,811.38 : x
  2. Step 2: Convert to fraction form
    692,660,368.61/955,966,410.36 = 424,688,811.38/x
  3. Step 3: Cross multiply
    692,660,368.61x = 955,966,410.36 × 424,688,811.38
  4. Step 4: Simplify right side
    692,660,368.61x = 405,988,238,532,870,272
  5. Step 5: Solve for x
    x = 405,988,238,532,870,272/692,660,368.61
  6. Step 6: Final answer
    x = 586,128,869.11

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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.