Home / 909,346.78-1,255,005.12-546,952.78

Finding the Fourth Proportional to 909,346.78, 1,255,005.12 and 546,952.78

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Solution

The fourth proportional to 909,346.78, 1,255,005.12 and 546,952.78 is: 754,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,346.78 : 1,255,005.12 = 546,952.78 : x
  2. Step 2: Convert to fraction form
    909,346.78/1,255,005.12 = 546,952.78/x
  3. Step 3: Cross multiply
    909,346.78x = 1,255,005.12 × 546,952.78
  4. Step 4: Simplify right side
    909,346.78x = 686,428,539,298.23
  5. Step 5: Solve for x
    x = 686,428,539,298.23/909,346.78
  6. Step 6: Final answer
    x = 754,858.93

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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.