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Finding the Fourth Proportional to 502,970.40, 754,455.60 and 370,438.20

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Solution

The fourth proportional to 502,970.40, 754,455.60 and 370,438.20 is: 555,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,970.40 : 754,455.60 = 370,438.20 : x
  2. Step 2: Convert to fraction form
    502,970.40/754,455.60 = 370,438.20/x
  3. Step 3: Cross multiply
    502,970.40x = 754,455.60 × 370,438.20
  4. Step 4: Simplify right side
    502,970.40x = 279,479,174,443.92
  5. Step 5: Solve for x
    x = 279,479,174,443.92/502,970.40
  6. Step 6: Final answer
    x = 555,657.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.