Home / 28,347,926.40-42,528,661.76-9,178,704

Finding the Fourth Proportional to 28,347,926.40, 42,528,661.76 and 9,178,704

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Solution

The fourth proportional to 28,347,926.40, 42,528,661.76 and 9,178,704 is: 13,770,248.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347,926.40 : 42,528,661.76 = 9,178,704 : x
  2. Step 2: Convert to fraction form
    28,347,926.40/42,528,661.76 = 9,178,704/x
  3. Step 3: Cross multiply
    28,347,926.40x = 42,528,661.76 × 9,178,704
  4. Step 4: Simplify right side
    28,347,926.40x = 390,357,997,811,159
  5. Step 5: Solve for x
    x = 390,357,997,811,159/28,347,926.40
  6. Step 6: Final answer
    x = 13,770,248.74

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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.