Home / 938,703.60-1,407,018.60-518,281.20

Finding the Fourth Proportional to 938,703.60, 1,407,018.60 and 518,281.20

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Solution

The fourth proportional to 938,703.60, 1,407,018.60 and 518,281.20 is: 776,849.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,703.60 : 1,407,018.60 = 518,281.20 : x
  2. Step 2: Convert to fraction form
    938,703.60/1,407,018.60 = 518,281.20/x
  3. Step 3: Cross multiply
    938,703.60x = 1,407,018.60 × 518,281.20
  4. Step 4: Simplify right side
    938,703.60x = 729,231,288,430.32
  5. Step 5: Solve for x
    x = 729,231,288,430.32/938,703.60
  6. Step 6: Final answer
    x = 776,849.36

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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.