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Finding the Fourth Proportional to 586,395.60, 809,312.76 and 371,555.66

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Solution

The fourth proportional to 586,395.60, 809,312.76 and 371,555.66 is: 512,801.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,395.60 : 809,312.76 = 371,555.66 : x
  2. Step 2: Convert to fraction form
    586,395.60/809,312.76 = 371,555.66/x
  3. Step 3: Cross multiply
    586,395.60x = 809,312.76 × 371,555.66
  4. Step 4: Simplify right side
    586,395.60x = 300,704,732,641.66
  5. Step 5: Solve for x
    x = 300,704,732,641.66/586,395.60
  6. Step 6: Final answer
    x = 512,801.82

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1.5x scale

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.