Home / 1,221,342.84-1,685,407.50-684,764.28

Finding the Fourth Proportional to 1,221,342.84, 1,685,407.50 and 684,764.28

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Solution

The fourth proportional to 1,221,342.84, 1,685,407.50 and 684,764.28 is: 944,949.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,342.84 : 1,685,407.50 = 684,764.28 : x
  2. Step 2: Convert to fraction form
    1,221,342.84/1,685,407.50 = 684,764.28/x
  3. Step 3: Cross multiply
    1,221,342.84x = 1,685,407.50 × 684,764.28
  4. Step 4: Simplify right side
    1,221,342.84x = 1,154,106,853,244.10
  5. Step 5: Solve for x
    x = 1,154,106,853,244.10/1,221,342.84
  6. Step 6: Final answer
    x = 944,949.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.