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Finding the Fourth Proportional to 586,627, 809,554.98 and 318,355

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Solution

The fourth proportional to 586,627, 809,554.98 and 318,355 is: 439,335.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,627 : 809,554.98 = 318,355 : x
  2. Step 2: Convert to fraction form
    586,627/809,554.98 = 318,355/x
  3. Step 3: Cross multiply
    586,627x = 809,554.98 × 318,355
  4. Step 4: Simplify right side
    586,627x = 257,725,875,657.90
  5. Step 5: Solve for x
    x = 257,725,875,657.90/586,627
  6. Step 6: Final answer
    x = 439,335.17

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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.