Home / 728,969.56-1,005,434.70-535,316.20

Finding the Fourth Proportional to 728,969.56, 1,005,434.70 and 535,316.20

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Solution

The fourth proportional to 728,969.56, 1,005,434.70 and 535,316.20 is: 738,337.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,969.56 : 1,005,434.70 = 535,316.20 : x
  2. Step 2: Convert to fraction form
    728,969.56/1,005,434.70 = 535,316.20/x
  3. Step 3: Cross multiply
    728,969.56x = 1,005,434.70 × 535,316.20
  4. Step 4: Simplify right side
    728,969.56x = 538,225,482,952.14
  5. Step 5: Solve for x
    x = 538,225,482,952.14/728,969.56
  6. Step 6: Final answer
    x = 738,337.39

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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.