Home / 840,813.72-1,160,348.36-478,289.56

Finding the Fourth Proportional to 840,813.72, 1,160,348.36 and 478,289.56

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Solution

The fourth proportional to 840,813.72, 1,160,348.36 and 478,289.56 is: 660,054.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,813.72 : 1,160,348.36 = 478,289.56 : x
  2. Step 2: Convert to fraction form
    840,813.72/1,160,348.36 = 478,289.56/x
  3. Step 3: Cross multiply
    840,813.72x = 1,160,348.36 × 478,289.56
  4. Step 4: Simplify right side
    840,813.72x = 554,982,506,551.12
  5. Step 5: Solve for x
    x = 554,982,506,551.12/840,813.72
  6. Step 6: Final answer
    x = 660,054.06

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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.