Home / 858,411.60-1,287,617.40-297,502.80

Finding the Fourth Proportional to 858,411.60, 1,287,617.40 and 297,502.80

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Solution

The fourth proportional to 858,411.60, 1,287,617.40 and 297,502.80 is: 446,254.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,411.60 : 1,287,617.40 = 297,502.80 : x
  2. Step 2: Convert to fraction form
    858,411.60/1,287,617.40 = 297,502.80/x
  3. Step 3: Cross multiply
    858,411.60x = 1,287,617.40 × 297,502.80
  4. Step 4: Simplify right side
    858,411.60x = 383,069,781,828.72
  5. Step 5: Solve for x
    x = 383,069,781,828.72/858,411.60
  6. Step 6: Final answer
    x = 446,254.20

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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.