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Finding the Fourth Proportional to 702,931.53, 970,043.74 and 380,641.62

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Solution

The fourth proportional to 702,931.53, 970,043.74 and 380,641.62 is: 525,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,931.53 : 970,043.74 = 380,641.62 : x
  2. Step 2: Convert to fraction form
    702,931.53/970,043.74 = 380,641.62/x
  3. Step 3: Cross multiply
    702,931.53x = 970,043.74 × 380,641.62
  4. Step 4: Simplify right side
    702,931.53x = 369,239,020,664.46
  5. Step 5: Solve for x
    x = 369,239,020,664.46/702,931.53
  6. Step 6: Final answer
    x = 525,284.48

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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.