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Finding the Fourth Proportional to 713,106.36, 984,088.20 and 390,828.42

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Solution

The fourth proportional to 713,106.36, 984,088.20 and 390,828.42 is: 539,344.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,106.36 : 984,088.20 = 390,828.42 : x
  2. Step 2: Convert to fraction form
    713,106.36/984,088.20 = 390,828.42/x
  3. Step 3: Cross multiply
    713,106.36x = 984,088.20 × 390,828.42
  4. Step 4: Simplify right side
    713,106.36x = 384,609,636,346.64
  5. Step 5: Solve for x
    x = 384,609,636,346.64/713,106.36
  6. Step 6: Final answer
    x = 539,344.00

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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.