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Finding the Fourth Proportional to 707,585.80, 974,807.22 and 492,356.20

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Solution

The fourth proportional to 707,585.80, 974,807.22 and 492,356.20 is: 678,295.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,585.80 : 974,807.22 = 492,356.20 : x
  2. Step 2: Convert to fraction form
    707,585.80/974,807.22 = 492,356.20/x
  3. Step 3: Cross multiply
    707,585.80x = 974,807.22 × 492,356.20
  4. Step 4: Simplify right side
    707,585.80x = 479,952,378,571.76
  5. Step 5: Solve for x
    x = 479,952,378,571.76/707,585.80
  6. Step 6: Final answer
    x = 678,295.66

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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.