Home / 877,311.81-1,316,454.30-428,036.40

Finding the Fourth Proportional to 877,311.81, 1,316,454.30 and 428,036.40

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Solution

The fourth proportional to 877,311.81, 1,316,454.30 and 428,036.40 is: 642,292.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,311.81 : 1,316,454.30 = 428,036.40 : x
  2. Step 2: Convert to fraction form
    877,311.81/1,316,454.30 = 428,036.40/x
  3. Step 3: Cross multiply
    877,311.81x = 1,316,454.30 × 428,036.40
  4. Step 4: Simplify right side
    877,311.81x = 563,490,359,336.52
  5. Step 5: Solve for x
    x = 563,490,359,336.52/877,311.81
  6. Step 6: Final answer
    x = 642,292.00

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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.