Home / 689,708.16-1,034,678.88-315,760.32

Finding the Fourth Proportional to 689,708.16, 1,034,678.88 and 315,760.32

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Solution

The fourth proportional to 689,708.16, 1,034,678.88 and 315,760.32 is: 473,693.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,708.16 : 1,034,678.88 = 315,760.32 : x
  2. Step 2: Convert to fraction form
    689,708.16/1,034,678.88 = 315,760.32/x
  3. Step 3: Cross multiply
    689,708.16x = 1,034,678.88 × 315,760.32
  4. Step 4: Simplify right side
    689,708.16x = 326,710,534,246.04
  5. Step 5: Solve for x
    x = 326,710,534,246.04/689,708.16
  6. Step 6: Final answer
    x = 473,693.88

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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.