Home / 838,484.81-1,157,090.85-489,685.22

Finding the Fourth Proportional to 838,484.81, 1,157,090.85 and 489,685.22

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Solution

The fourth proportional to 838,484.81, 1,157,090.85 and 489,685.22 is: 675,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,484.81 : 1,157,090.85 = 489,685.22 : x
  2. Step 2: Convert to fraction form
    838,484.81/1,157,090.85 = 489,685.22/x
  3. Step 3: Cross multiply
    838,484.81x = 1,157,090.85 × 489,685.22
  4. Step 4: Simplify right side
    838,484.81x = 566,610,281,656.78
  5. Step 5: Solve for x
    x = 566,610,281,656.78/838,484.81
  6. Step 6: Final answer
    x = 675,754.98

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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.