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Finding the Fourth Proportional to 586,143.12, 808,877.96 and 317,871.12

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Solution

The fourth proportional to 586,143.12, 808,877.96 and 317,871.12 is: 438,662.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,143.12 : 808,877.96 = 317,871.12 : x
  2. Step 2: Convert to fraction form
    586,143.12/808,877.96 = 317,871.12/x
  3. Step 3: Cross multiply
    586,143.12x = 808,877.96 × 317,871.12
  4. Step 4: Simplify right side
    586,143.12x = 257,118,943,088.52
  5. Step 5: Solve for x
    x = 257,118,943,088.52/586,143.12
  6. Step 6: Final answer
    x = 438,662.39

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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.