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Finding the Fourth Proportional to 547,218.40, 819,515.40 and 442,242.40

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Solution

The fourth proportional to 547,218.40, 819,515.40 and 442,242.40 is: 662,303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,218.40 : 819,515.40 = 442,242.40 : x
  2. Step 2: Convert to fraction form
    547,218.40/819,515.40 = 442,242.40/x
  3. Step 3: Cross multiply
    547,218.40x = 819,515.40 × 442,242.40
  4. Step 4: Simplify right side
    547,218.40x = 362,424,457,332.96
  5. Step 5: Solve for x
    x = 362,424,457,332.96/547,218.40
  6. Step 6: Final answer
    x = 662,303.13

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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.