Home / 531,122.47-732,939.54-289,407.13

Finding the Fourth Proportional to 531,122.47, 732,939.54 and 289,407.13

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Solution

The fourth proportional to 531,122.47, 732,939.54 and 289,407.13 is: 399,376.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,122.47 : 732,939.54 = 289,407.13 : x
  2. Step 2: Convert to fraction form
    531,122.47/732,939.54 = 289,407.13/x
  3. Step 3: Cross multiply
    531,122.47x = 732,939.54 × 289,407.13
  4. Step 4: Simplify right side
    531,122.47x = 212,117,925,817.30
  5. Step 5: Solve for x
    x = 212,117,925,817.30/531,122.47
  6. Step 6: Final answer
    x = 399,376.68

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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.