Home / 713,746.89-984,971.34-391,463.28

Finding the Fourth Proportional to 713,746.89, 984,971.34 and 391,463.28

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Solution

The fourth proportional to 713,746.89, 984,971.34 and 391,463.28 is: 540,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,746.89 : 984,971.34 = 391,463.28 : x
  2. Step 2: Convert to fraction form
    713,746.89/984,971.34 = 391,463.28/x
  3. Step 3: Cross multiply
    713,746.89x = 984,971.34 × 391,463.28
  4. Step 4: Simplify right side
    713,746.89x = 385,580,111,462.40
  5. Step 5: Solve for x
    x = 385,580,111,462.40/713,746.89
  6. Step 6: Final answer
    x = 540,219.67

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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.