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Finding the Fourth Proportional to 402,309.40, 564,807.80 and 402,309.40

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Solution

The fourth proportional to 402,309.40, 564,807.80 and 402,309.40 is: 564,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,309.40 : 564,807.80 = 402,309.40 : x
  2. Step 2: Convert to fraction form
    402,309.40/564,807.80 = 402,309.40/x
  3. Step 3: Cross multiply
    402,309.40x = 564,807.80 × 402,309.40
  4. Step 4: Simplify right side
    402,309.40x = 227,227,487,133.32
  5. Step 5: Solve for x
    x = 227,227,487,133.32/402,309.40
  6. Step 6: Final answer
    x = 564,807.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.