Home / 971,242.20-1,455,308.10-638,429.40

Finding the Fourth Proportional to 971,242.20, 1,455,308.10 and 638,429.40

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Solution

The fourth proportional to 971,242.20, 1,455,308.10 and 638,429.40 is: 956,621.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,242.20 : 1,455,308.10 = 638,429.40 : x
  2. Step 2: Convert to fraction form
    971,242.20/1,455,308.10 = 638,429.40/x
  3. Step 3: Cross multiply
    971,242.20x = 1,455,308.10 × 638,429.40
  4. Step 4: Simplify right side
    971,242.20x = 929,111,477,098.14
  5. Step 5: Solve for x
    x = 929,111,477,098.14/971,242.20
  6. Step 6: Final answer
    x = 956,621.82

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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.