Home / 485,747.36-670,219.80-292,066.64

Finding the Fourth Proportional to 485,747.36, 670,219.80 and 292,066.64

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Solution

The fourth proportional to 485,747.36, 670,219.80 and 292,066.64 is: 402,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,747.36 : 670,219.80 = 292,066.64 : x
  2. Step 2: Convert to fraction form
    485,747.36/670,219.80 = 292,066.64/x
  3. Step 3: Cross multiply
    485,747.36x = 670,219.80 × 292,066.64
  4. Step 4: Simplify right side
    485,747.36x = 195,748,845,047.47
  5. Step 5: Solve for x
    x = 195,748,845,047.47/485,747.36
  6. Step 6: Final answer
    x = 402,984.89

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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.