Home / 879,276.80-1,318,526.40-405,718.40

Finding the Fourth Proportional to 879,276.80, 1,318,526.40 and 405,718.40

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Solution

The fourth proportional to 879,276.80, 1,318,526.40 and 405,718.40 is: 608,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,276.80 : 1,318,526.40 = 405,718.40 : x
  2. Step 2: Convert to fraction form
    879,276.80/1,318,526.40 = 405,718.40/x
  3. Step 3: Cross multiply
    879,276.80x = 1,318,526.40 × 405,718.40
  4. Step 4: Simplify right side
    879,276.80x = 534,950,421,365.76
  5. Step 5: Solve for x
    x = 534,950,421,365.76/879,276.80
  6. Step 6: Final answer
    x = 608,398.20

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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.