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Finding the Fourth Proportional to 877,456.40, 1,315,309.80 and 403,314.80

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Solution

The fourth proportional to 877,456.40, 1,315,309.80 and 403,314.80 is: 604,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,456.40 : 1,315,309.80 = 403,314.80 : x
  2. Step 2: Convert to fraction form
    877,456.40/1,315,309.80 = 403,314.80/x
  3. Step 3: Cross multiply
    877,456.40x = 1,315,309.80 × 403,314.80
  4. Step 4: Simplify right side
    877,456.40x = 530,483,908,925.04
  5. Step 5: Solve for x
    x = 530,483,908,925.04/877,456.40
  6. Step 6: Final answer
    x = 604,570.11

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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.