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Finding the Fourth Proportional to 709,339.80, 1,064,009.70 and 667,349.40

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Solution

The fourth proportional to 709,339.80, 1,064,009.70 and 667,349.40 is: 1,001,024.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,339.80 : 1,064,009.70 = 667,349.40 : x
  2. Step 2: Convert to fraction form
    709,339.80/1,064,009.70 = 667,349.40/x
  3. Step 3: Cross multiply
    709,339.80x = 1,064,009.70 × 667,349.40
  4. Step 4: Simplify right side
    709,339.80x = 710,066,234,889.18
  5. Step 5: Solve for x
    x = 710,066,234,889.18/709,339.80
  6. Step 6: Final answer
    x = 1,001,024.10

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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.