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Finding the Fourth Proportional to 898,978.03, 1,348,457.80 and 519,657.40

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Solution

The fourth proportional to 898,978.03, 1,348,457.80 and 519,657.40 is: 779,480.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,978.03 : 1,348,457.80 = 519,657.40 : x
  2. Step 2: Convert to fraction form
    898,978.03/1,348,457.80 = 519,657.40/x
  3. Step 3: Cross multiply
    898,978.03x = 1,348,457.80 × 519,657.40
  4. Step 4: Simplify right side
    898,978.03x = 700,736,074,357.72
  5. Step 5: Solve for x
    x = 700,736,074,357.72/898,978.03
  6. Step 6: Final answer
    x = 779,480.76

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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.