Home / 690,436.80-1,036,056.96-291,052.80

Finding the Fourth Proportional to 690,436.80, 1,036,056.96 and 291,052.80

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Solution

The fourth proportional to 690,436.80, 1,036,056.96 and 291,052.80 is: 436,748.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,436.80 : 1,036,056.96 = 291,052.80 : x
  2. Step 2: Convert to fraction form
    690,436.80/1,036,056.96 = 291,052.80/x
  3. Step 3: Cross multiply
    690,436.80x = 1,036,056.96 × 291,052.80
  4. Step 4: Simplify right side
    690,436.80x = 301,547,279,167.49
  5. Step 5: Solve for x
    x = 301,547,279,167.49/690,436.80
  6. Step 6: Final answer
    x = 436,748.56

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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.