Home / 652,138.40-977,041.20-402,528.80

Finding the Fourth Proportional to 652,138.40, 977,041.20 and 402,528.80

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Solution

The fourth proportional to 652,138.40, 977,041.20 and 402,528.80 is: 603,073.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,138.40 : 977,041.20 = 402,528.80 : x
  2. Step 2: Convert to fraction form
    652,138.40/977,041.20 = 402,528.80/x
  3. Step 3: Cross multiply
    652,138.40x = 977,041.20 × 402,528.80
  4. Step 4: Simplify right side
    652,138.40x = 393,287,221,786.56
  5. Step 5: Solve for x
    x = 393,287,221,786.56/652,138.40
  6. Step 6: Final answer
    x = 603,073.25

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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.