Home / 812,138.80-1,215,875.40-497,210.80

Finding the Fourth Proportional to 812,138.80, 1,215,875.40 and 497,210.80

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Solution

The fourth proportional to 812,138.80, 1,215,875.40 and 497,210.80 is: 744,388.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,138.80 : 1,215,875.40 = 497,210.80 : x
  2. Step 2: Convert to fraction form
    812,138.80/1,215,875.40 = 497,210.80/x
  3. Step 3: Cross multiply
    812,138.80x = 1,215,875.40 × 497,210.80
  4. Step 4: Simplify right side
    812,138.80x = 604,546,380,334.32
  5. Step 5: Solve for x
    x = 604,546,380,334.32/812,138.80
  6. Step 6: Final answer
    x = 744,388.00

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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.