Home / 840,699.81-1,160,130.60-478,073.34

Finding the Fourth Proportional to 840,699.81, 1,160,130.60 and 478,073.34

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Solution

The fourth proportional to 840,699.81, 1,160,130.60 and 478,073.34 is: 659,721.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,699.81 : 1,160,130.60 = 478,073.34 : x
  2. Step 2: Convert to fraction form
    840,699.81/1,160,130.60 = 478,073.34/x
  3. Step 3: Cross multiply
    840,699.81x = 1,160,130.60 × 478,073.34
  4. Step 4: Simplify right side
    840,699.81x = 554,627,510,778.20
  5. Step 5: Solve for x
    x = 554,627,510,778.20/840,699.81
  6. Step 6: Final answer
    x = 659,721.23

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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.