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Finding the Fourth Proportional to 612,091.80, 918,137.70 and 598,969.80

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Solution

The fourth proportional to 612,091.80, 918,137.70 and 598,969.80 is: 898,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,091.80 : 918,137.70 = 598,969.80 : x
  2. Step 2: Convert to fraction form
    612,091.80/918,137.70 = 598,969.80/x
  3. Step 3: Cross multiply
    612,091.80x = 918,137.70 × 598,969.80
  4. Step 4: Simplify right side
    612,091.80x = 549,936,754,541.46
  5. Step 5: Solve for x
    x = 549,936,754,541.46/612,091.80
  6. Step 6: Final answer
    x = 898,454.70

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1.5x scale

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.