Home / 912,289.34-1,368,657.18-642,943

Finding the Fourth Proportional to 912,289.34, 1,368,657.18 and 642,943

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Solution

The fourth proportional to 912,289.34, 1,368,657.18 and 642,943 is: 964,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,289.34 : 1,368,657.18 = 642,943 : x
  2. Step 2: Convert to fraction form
    912,289.34/1,368,657.18 = 642,943/x
  3. Step 3: Cross multiply
    912,289.34x = 1,368,657.18 × 642,943
  4. Step 4: Simplify right side
    912,289.34x = 879,968,553,280.74
  5. Step 5: Solve for x
    x = 879,968,553,280.74/912,289.34
  6. Step 6: Final answer
    x = 964,571.78

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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.