Home / 739,402.68-1,020,378.77-399,870.93

Finding the Fourth Proportional to 739,402.68, 1,020,378.77 and 399,870.93

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Solution

The fourth proportional to 739,402.68, 1,020,378.77 and 399,870.93 is: 551,823.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,402.68 : 1,020,378.77 = 399,870.93 : x
  2. Step 2: Convert to fraction form
    739,402.68/1,020,378.77 = 399,870.93/x
  3. Step 3: Cross multiply
    739,402.68x = 1,020,378.77 × 399,870.93
  4. Step 4: Simplify right side
    739,402.68x = 408,019,807,712.16
  5. Step 5: Solve for x
    x = 408,019,807,712.16/739,402.68
  6. Step 6: Final answer
    x = 551,823.54

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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.