Home / 646,938.90-970,408.35-578,510.10

Finding the Fourth Proportional to 646,938.90, 970,408.35 and 578,510.10

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Solution

The fourth proportional to 646,938.90, 970,408.35 and 578,510.10 is: 867,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,938.90 : 970,408.35 = 578,510.10 : x
  2. Step 2: Convert to fraction form
    646,938.90/970,408.35 = 578,510.10/x
  3. Step 3: Cross multiply
    646,938.90x = 970,408.35 × 578,510.10
  4. Step 4: Simplify right side
    646,938.90x = 561,391,031,599.34
  5. Step 5: Solve for x
    x = 561,391,031,599.34/646,938.90
  6. Step 6: Final answer
    x = 867,765.15

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Double scale
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Similar ratio
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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.