Home / 917,659.78-1,266,572.90-509,901.72

Finding the Fourth Proportional to 917,659.78, 1,266,572.90 and 509,901.72

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Solution

The fourth proportional to 917,659.78, 1,266,572.90 and 509,901.72 is: 703,776.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,659.78 : 1,266,572.90 = 509,901.72 : x
  2. Step 2: Convert to fraction form
    917,659.78/1,266,572.90 = 509,901.72/x
  3. Step 3: Cross multiply
    917,659.78x = 1,266,572.90 × 509,901.72
  4. Step 4: Simplify right side
    917,659.78x = 645,827,700,215.39
  5. Step 5: Solve for x
    x = 645,827,700,215.39/917,659.78
  6. Step 6: Final answer
    x = 703,776.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.