Home / 815,130.90-1,222,210.35-499,814.10

Finding the Fourth Proportional to 815,130.90, 1,222,210.35 and 499,814.10

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Solution

The fourth proportional to 815,130.90, 1,222,210.35 and 499,814.10 is: 749,423.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,130.90 : 1,222,210.35 = 499,814.10 : x
  2. Step 2: Convert to fraction form
    815,130.90/1,222,210.35 = 499,814.10/x
  3. Step 3: Cross multiply
    815,130.90x = 1,222,210.35 × 499,814.10
  4. Step 4: Simplify right side
    815,130.90x = 610,877,966,095.94
  5. Step 5: Solve for x
    x = 610,877,966,095.94/815,130.90
  6. Step 6: Final answer
    x = 749,423.15

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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.