Home / 645,165.20-965,904.60-571,437.20

Finding the Fourth Proportional to 645,165.20, 965,904.60 and 571,437.20

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Solution

The fourth proportional to 645,165.20, 965,904.60 and 571,437.20 is: 855,523.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,165.20 : 965,904.60 = 571,437.20 : x
  2. Step 2: Convert to fraction form
    645,165.20/965,904.60 = 571,437.20/x
  3. Step 3: Cross multiply
    645,165.20x = 965,904.60 × 571,437.20
  4. Step 4: Simplify right side
    645,165.20x = 551,953,820,091.12
  5. Step 5: Solve for x
    x = 551,953,820,091.12/645,165.20
  6. Step 6: Final answer
    x = 855,523.24

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1.5x scale

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.