Home / 689,048.74-951,178.89-646,004.26

Finding the Fourth Proportional to 689,048.74, 951,178.89 and 646,004.26

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Solution

The fourth proportional to 689,048.74, 951,178.89 and 646,004.26 is: 891,759.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,048.74 : 951,178.89 = 646,004.26 : x
  2. Step 2: Convert to fraction form
    689,048.74/951,178.89 = 646,004.26/x
  3. Step 3: Cross multiply
    689,048.74x = 951,178.89 × 646,004.26
  4. Step 4: Simplify right side
    689,048.74x = 614,465,614,962.07
  5. Step 5: Solve for x
    x = 614,465,614,962.07/689,048.74
  6. Step 6: Final answer
    x = 891,759.29

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Double scale
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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.