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Finding the Fourth Proportional to 611,526.40, 918,164.40 and 434,816.80

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Solution

The fourth proportional to 611,526.40, 918,164.40 and 434,816.80 is: 652,847.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,526.40 : 918,164.40 = 434,816.80 : x
  2. Step 2: Convert to fraction form
    611,526.40/918,164.40 = 434,816.80/x
  3. Step 3: Cross multiply
    611,526.40x = 918,164.40 × 434,816.80
  4. Step 4: Simplify right side
    611,526.40x = 399,233,306,281.92
  5. Step 5: Solve for x
    x = 399,233,306,281.92/611,526.40
  6. Step 6: Final answer
    x = 652,847.21

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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.