Home / 928,091,438.11-1,280,736,864.79-510,402,431.71

Finding the Fourth Proportional to 928,091,438.11, 1,280,736,864.79 and 510,402,431.71

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Solution

The fourth proportional to 928,091,438.11, 1,280,736,864.79 and 510,402,431.71 is: 704,339,231.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,091,438.11 : 1,280,736,864.79 = 510,402,431.71 : x
  2. Step 2: Convert to fraction form
    928,091,438.11/1,280,736,864.79 = 510,402,431.71/x
  3. Step 3: Cross multiply
    928,091,438.11x = 1,280,736,864.79 × 510,402,431.71
  4. Step 4: Simplify right side
    928,091,438.11x = 653,691,210,169,457,408
  5. Step 5: Solve for x
    x = 653,691,210,169,457,408/928,091,438.11
  6. Step 6: Final answer
    x = 704,339,231.38

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Double scale
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1.5x scale

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.