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Finding the Fourth Proportional to 702,018.47, 968,785.61 and 379,728.47

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Solution

The fourth proportional to 702,018.47, 968,785.61 and 379,728.47 is: 524,025.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,018.47 : 968,785.61 = 379,728.47 : x
  2. Step 2: Convert to fraction form
    702,018.47/968,785.61 = 379,728.47/x
  3. Step 3: Cross multiply
    702,018.47x = 968,785.61 × 379,728.47
  4. Step 4: Simplify right side
    702,018.47x = 367,875,477,443.32
  5. Step 5: Solve for x
    x = 367,875,477,443.32/702,018.47
  6. Step 6: Final answer
    x = 524,025.35

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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.