Home / 498,685,344.66-688,152,981.72-286,958,002.05

Finding the Fourth Proportional to 498,685,344.66, 688,152,981.72 and 286,958,002.05

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Solution

The fourth proportional to 498,685,344.66, 688,152,981.72 and 286,958,002.05 is: 395,983,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,685,344.66 : 688,152,981.72 = 286,958,002.05 : x
  2. Step 2: Convert to fraction form
    498,685,344.66/688,152,981.72 = 286,958,002.05/x
  3. Step 3: Cross multiply
    498,685,344.66x = 688,152,981.72 × 286,958,002.05
  4. Step 4: Simplify right side
    498,685,344.66x = 197,471,004,739,121,376
  5. Step 5: Solve for x
    x = 197,471,004,739,121,376/498,685,344.66
  6. Step 6: Final answer
    x = 395,983,172.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.