Home / 1,240,657.20-1,860,985.80-342,237.60

Finding the Fourth Proportional to 1,240,657.20, 1,860,985.80 and 342,237.60

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Solution

The fourth proportional to 1,240,657.20, 1,860,985.80 and 342,237.60 is: 513,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,657.20 : 1,860,985.80 = 342,237.60 : x
  2. Step 2: Convert to fraction form
    1,240,657.20/1,860,985.80 = 342,237.60/x
  3. Step 3: Cross multiply
    1,240,657.20x = 1,860,985.80 × 342,237.60
  4. Step 4: Simplify right side
    1,240,657.20x = 636,899,313,826.08
  5. Step 5: Solve for x
    x = 636,899,313,826.08/1,240,657.20
  6. Step 6: Final answer
    x = 513,356.40

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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.