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Finding the Fourth Proportional to 710,008.57, 979,810.98 and 419,724.76

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Solution

The fourth proportional to 710,008.57, 979,810.98 and 419,724.76 is: 579,219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,008.57 : 979,810.98 = 419,724.76 : x
  2. Step 2: Convert to fraction form
    710,008.57/979,810.98 = 419,724.76/x
  3. Step 3: Cross multiply
    710,008.57x = 979,810.98 × 419,724.76
  4. Step 4: Simplify right side
    710,008.57x = 411,250,921,428.19
  5. Step 5: Solve for x
    x = 411,250,921,428.19/710,008.57
  6. Step 6: Final answer
    x = 579,219.66

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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.