Home / 783,421.76-1,081,452.70-529,117.40

Finding the Fourth Proportional to 783,421.76, 1,081,452.70 and 529,117.40

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Solution

The fourth proportional to 783,421.76, 1,081,452.70 and 529,117.40 is: 730,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,421.76 : 1,081,452.70 = 529,117.40 : x
  2. Step 2: Convert to fraction form
    783,421.76/1,081,452.70 = 529,117.40/x
  3. Step 3: Cross multiply
    783,421.76x = 1,081,452.70 × 529,117.40
  4. Step 4: Simplify right side
    783,421.76x = 572,215,440,846.98
  5. Step 5: Solve for x
    x = 572,215,440,846.98/783,421.76
  6. Step 6: Final answer
    x = 730,405.34

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Double scale
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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.