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Finding the Fourth Proportional to 716,010.83, 988,078.87 and 389,316.77

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Solution

The fourth proportional to 716,010.83, 988,078.87 and 389,316.77 is: 537,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,010.83 : 988,078.87 = 389,316.77 : x
  2. Step 2: Convert to fraction form
    716,010.83/988,078.87 = 389,316.77/x
  3. Step 3: Cross multiply
    716,010.83x = 988,078.87 × 389,316.77
  4. Step 4: Simplify right side
    716,010.83x = 384,675,674,173.65
  5. Step 5: Solve for x
    x = 384,675,674,173.65/716,010.83
  6. Step 6: Final answer
    x = 537,248.40

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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.