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Finding the Fourth Proportional to 556,218.80, 834,328.20 and 343,642.40

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Solution

The fourth proportional to 556,218.80, 834,328.20 and 343,642.40 is: 515,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,218.80 : 834,328.20 = 343,642.40 : x
  2. Step 2: Convert to fraction form
    556,218.80/834,328.20 = 343,642.40/x
  3. Step 3: Cross multiply
    556,218.80x = 834,328.20 × 343,642.40
  4. Step 4: Simplify right side
    556,218.80x = 286,710,545,035.68
  5. Step 5: Solve for x
    x = 286,710,545,035.68/556,218.80
  6. Step 6: Final answer
    x = 515,463.60

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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.