Home / 877,036.80-1,315,166.40-403,478.40

Finding the Fourth Proportional to 877,036.80, 1,315,166.40 and 403,478.40

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Solution

The fourth proportional to 877,036.80, 1,315,166.40 and 403,478.40 is: 605,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,036.80 : 1,315,166.40 = 403,478.40 : x
  2. Step 2: Convert to fraction form
    877,036.80/1,315,166.40 = 403,478.40/x
  3. Step 3: Cross multiply
    877,036.80x = 1,315,166.40 × 403,478.40
  4. Step 4: Simplify right side
    877,036.80x = 530,641,234,805.76
  5. Step 5: Solve for x
    x = 530,641,234,805.76/877,036.80
  6. Step 6: Final answer
    x = 605,038.73

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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.