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Finding the Fourth Proportional to 518,038.40, 709,715.19 and 498,622.93

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Solution

The fourth proportional to 518,038.40, 709,715.19 and 498,622.93 is: 683,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,038.40 : 709,715.19 = 498,622.93 : x
  2. Step 2: Convert to fraction form
    518,038.40/709,715.19 = 498,622.93/x
  3. Step 3: Cross multiply
    518,038.40x = 709,715.19 × 498,622.93
  4. Step 4: Simplify right side
    518,038.40x = 353,880,267,503.31
  5. Step 5: Solve for x
    x = 353,880,267,503.31/518,038.40
  6. Step 6: Final answer
    x = 683,115.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.