Home / 1,272,418.16-1,911,153.08-761,068.40

Finding the Fourth Proportional to 1,272,418.16, 1,911,153.08 and 761,068.40

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Solution

The fourth proportional to 1,272,418.16, 1,911,153.08 and 761,068.40 is: 1,143,113.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,418.16 : 1,911,153.08 = 761,068.40 : x
  2. Step 2: Convert to fraction form
    1,272,418.16/1,911,153.08 = 761,068.40/x
  3. Step 3: Cross multiply
    1,272,418.16x = 1,911,153.08 × 761,068.40
  4. Step 4: Simplify right side
    1,272,418.16x = 1,454,518,216,750.67
  5. Step 5: Solve for x
    x = 1,454,518,216,750.67/1,272,418.16
  6. Step 6: Final answer
    x = 1,143,113.37

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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.