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Finding the Fourth Proportional to 518,478.40, 777,717.60 and 144,501.40

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Solution

The fourth proportional to 518,478.40, 777,717.60 and 144,501.40 is: 216,752.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,478.40 : 777,717.60 = 144,501.40 : x
  2. Step 2: Convert to fraction form
    518,478.40/777,717.60 = 144,501.40/x
  3. Step 3: Cross multiply
    518,478.40x = 777,717.60 × 144,501.40
  4. Step 4: Simplify right side
    518,478.40x = 112,381,282,004.64
  5. Step 5: Solve for x
    x = 112,381,282,004.64/518,478.40
  6. Step 6: Final answer
    x = 216,752.10

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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.