Home / 772,416,007.70-1,158,624,011.55-287,678,830.10

Finding the Fourth Proportional to 772,416,007.70, 1,158,624,011.55 and 287,678,830.10

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Solution

The fourth proportional to 772,416,007.70, 1,158,624,011.55 and 287,678,830.10 is: 431,518,245.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,416,007.70 : 1,158,624,011.55 = 287,678,830.10 : x
  2. Step 2: Convert to fraction form
    772,416,007.70/1,158,624,011.55 = 287,678,830.10/x
  3. Step 3: Cross multiply
    772,416,007.70x = 1,158,624,011.55 × 287,678,830.10
  4. Step 4: Simplify right side
    772,416,007.70x = 333,311,600,168,472,896
  5. Step 5: Solve for x
    x = 333,311,600,168,472,896/772,416,007.70
  6. Step 6: Final answer
    x = 431,518,245.15

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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.