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Finding the Fourth Proportional to 514,869.88, 710,484.60 and 285,424.96

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Solution

The fourth proportional to 514,869.88, 710,484.60 and 285,424.96 is: 393,866.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,869.88 : 710,484.60 = 285,424.96 : x
  2. Step 2: Convert to fraction form
    514,869.88/710,484.60 = 285,424.96/x
  3. Step 3: Cross multiply
    514,869.88x = 710,484.60 × 285,424.96
  4. Step 4: Simplify right side
    514,869.88x = 202,790,038,535.62
  5. Step 5: Solve for x
    x = 202,790,038,535.62/514,869.88
  6. Step 6: Final answer
    x = 393,866.58

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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.