Home / 820,287.20-1,230,430.80-460,088.30

Finding the Fourth Proportional to 820,287.20, 1,230,430.80 and 460,088.30

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Solution

The fourth proportional to 820,287.20, 1,230,430.80 and 460,088.30 is: 690,132.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,287.20 : 1,230,430.80 = 460,088.30 : x
  2. Step 2: Convert to fraction form
    820,287.20/1,230,430.80 = 460,088.30/x
  3. Step 3: Cross multiply
    820,287.20x = 1,230,430.80 × 460,088.30
  4. Step 4: Simplify right side
    820,287.20x = 566,106,815,039.64
  5. Step 5: Solve for x
    x = 566,106,815,039.64/820,287.20
  6. Step 6: Final answer
    x = 690,132.45

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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.