Home / 1,224,038.76-1,689,139.68-680,160.48

Finding the Fourth Proportional to 1,224,038.76, 1,689,139.68 and 680,160.48

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Solution

The fourth proportional to 1,224,038.76, 1,689,139.68 and 680,160.48 is: 938,602.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,038.76 : 1,689,139.68 = 680,160.48 : x
  2. Step 2: Convert to fraction form
    1,224,038.76/1,689,139.68 = 680,160.48/x
  3. Step 3: Cross multiply
    1,224,038.76x = 1,689,139.68 × 680,160.48
  4. Step 4: Simplify right side
    1,224,038.76x = 1,148,886,055,535.85
  5. Step 5: Solve for x
    x = 1,148,886,055,535.85/1,224,038.76
  6. Step 6: Final answer
    x = 938,602.68

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Double scale
Find fourth proportional to 1,224,039.76, 1,689,141.06 and 680,161.48
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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.