Home / 1,145,643.20-1,717,816.80-435,694.40

Finding the Fourth Proportional to 1,145,643.20, 1,717,816.80 and 435,694.40

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Solution

The fourth proportional to 1,145,643.20, 1,717,816.80 and 435,694.40 is: 653,295.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,643.20 : 1,717,816.80 = 435,694.40 : x
  2. Step 2: Convert to fraction form
    1,145,643.20/1,717,816.80 = 435,694.40/x
  3. Step 3: Cross multiply
    1,145,643.20x = 1,717,816.80 × 435,694.40
  4. Step 4: Simplify right side
    1,145,643.20x = 748,443,159,985.92
  5. Step 5: Solve for x
    x = 748,443,159,985.92/1,145,643.20
  6. Step 6: Final answer
    x = 653,295.16

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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.