Home / 763,461.68-1,145,326.68-290,188.40

Finding the Fourth Proportional to 763,461.68, 1,145,326.68 and 290,188.40

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Solution

The fourth proportional to 763,461.68, 1,145,326.68 and 290,188.40 is: 435,333.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,461.68 : 1,145,326.68 = 290,188.40 : x
  2. Step 2: Convert to fraction form
    763,461.68/1,145,326.68 = 290,188.40/x
  3. Step 3: Cross multiply
    763,461.68x = 1,145,326.68 × 290,188.40
  4. Step 4: Simplify right side
    763,461.68x = 332,360,516,746.51
  5. Step 5: Solve for x
    x = 332,360,516,746.51/763,461.68
  6. Step 6: Final answer
    x = 435,333.59

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Double scale
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1.5x scale

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.