Home / 713,243.60-1,069,865.40-319,259.60

Finding the Fourth Proportional to 713,243.60, 1,069,865.40 and 319,259.60

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Solution

The fourth proportional to 713,243.60, 1,069,865.40 and 319,259.60 is: 478,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,243.60 : 1,069,865.40 = 319,259.60 : x
  2. Step 2: Convert to fraction form
    713,243.60/1,069,865.40 = 319,259.60/x
  3. Step 3: Cross multiply
    713,243.60x = 1,069,865.40 × 319,259.60
  4. Step 4: Simplify right side
    713,243.60x = 341,564,799,657.84
  5. Step 5: Solve for x
    x = 341,564,799,657.84/713,243.60
  6. Step 6: Final answer
    x = 478,889.40

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Double scale
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Similar ratio
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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.