Home / 912,021.60-1,368,032.40-513,890.40

Finding the Fourth Proportional to 912,021.60, 1,368,032.40 and 513,890.40

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Solution

The fourth proportional to 912,021.60, 1,368,032.40 and 513,890.40 is: 770,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,021.60 : 1,368,032.40 = 513,890.40 : x
  2. Step 2: Convert to fraction form
    912,021.60/1,368,032.40 = 513,890.40/x
  3. Step 3: Cross multiply
    912,021.60x = 1,368,032.40 × 513,890.40
  4. Step 4: Simplify right side
    912,021.60x = 703,018,717,248.96
  5. Step 5: Solve for x
    x = 703,018,717,248.96/912,021.60
  6. Step 6: Final answer
    x = 770,835.60

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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.