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Finding the Fourth Proportional to 713,143.58, 984,133.60 and 390,873.74

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Solution

The fourth proportional to 713,143.58, 984,133.60 and 390,873.74 is: 539,403.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,143.58 : 984,133.60 = 390,873.74 : x
  2. Step 2: Convert to fraction form
    713,143.58/984,133.60 = 390,873.74/x
  3. Step 3: Cross multiply
    713,143.58x = 984,133.60 × 390,873.74
  4. Step 4: Simplify right side
    713,143.58x = 384,671,974,993.81
  5. Step 5: Solve for x
    x = 384,671,974,993.81/713,143.58
  6. Step 6: Final answer
    x = 539,403.27

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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.