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Finding the Fourth Proportional to 611,444.40, 918,041.40 and 434,734.80

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Solution

The fourth proportional to 611,444.40, 918,041.40 and 434,734.80 is: 652,724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,444.40 : 918,041.40 = 434,734.80 : x
  2. Step 2: Convert to fraction form
    611,444.40/918,041.40 = 434,734.80/x
  3. Step 3: Cross multiply
    611,444.40x = 918,041.40 × 434,734.80
  4. Step 4: Simplify right side
    611,444.40x = 399,104,544,420.72
  5. Step 5: Solve for x
    x = 399,104,544,420.72/611,444.40
  6. Step 6: Final answer
    x = 652,724.18

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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.