Home / 1,392,406,129.12-2,088,382,152.72-409,602,821.76

Finding the Fourth Proportional to 1,392,406,129.12, 2,088,382,152.72 and 409,602,821.76

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Solution

The fourth proportional to 1,392,406,129.12, 2,088,382,152.72 and 409,602,821.76 is: 614,337,444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,406,129.12 : 2,088,382,152.72 = 409,602,821.76 : x
  2. Step 2: Convert to fraction form
    1,392,406,129.12/2,088,382,152.72 = 409,602,821.76/x
  3. Step 3: Cross multiply
    1,392,406,129.12x = 2,088,382,152.72 × 409,602,821.76
  4. Step 4: Simplify right side
    1,392,406,129.12x = 855,407,222,667,335,296
  5. Step 5: Solve for x
    x = 855,407,222,667,335,296/1,392,406,129.12
  6. Step 6: Final answer
    x = 614,337,444.21

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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.