Home / 765,417.60-1,145,404.80-666,662.40

Finding the Fourth Proportional to 765,417.60, 1,145,404.80 and 666,662.40

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Solution

The fourth proportional to 765,417.60, 1,145,404.80 and 666,662.40 is: 997,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,417.60 : 1,145,404.80 = 666,662.40 : x
  2. Step 2: Convert to fraction form
    765,417.60/1,145,404.80 = 666,662.40/x
  3. Step 3: Cross multiply
    765,417.60x = 1,145,404.80 × 666,662.40
  4. Step 4: Simplify right side
    765,417.60x = 763,598,312,939.52
  5. Step 5: Solve for x
    x = 763,598,312,939.52/765,417.60
  6. Step 6: Final answer
    x = 997,623.14

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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.