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Finding the Fourth Proportional to 652,130.40, 977,029.20 and 402,520.80

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Solution

The fourth proportional to 652,130.40, 977,029.20 and 402,520.80 is: 603,061.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,130.40 : 977,029.20 = 402,520.80 : x
  2. Step 2: Convert to fraction form
    652,130.40/977,029.20 = 402,520.80/x
  3. Step 3: Cross multiply
    652,130.40x = 977,029.20 × 402,520.80
  4. Step 4: Simplify right side
    652,130.40x = 393,274,575,207.36
  5. Step 5: Solve for x
    x = 393,274,575,207.36/652,130.40
  6. Step 6: Final answer
    x = 603,061.25

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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.