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Finding the Fourth Proportional to 706,532.79, 974,994.40 and 400,637.10

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Solution

The fourth proportional to 706,532.79, 974,994.40 and 400,637.10 is: 552,867.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,532.79 : 974,994.40 = 400,637.10 : x
  2. Step 2: Convert to fraction form
    706,532.79/974,994.40 = 400,637.10/x
  3. Step 3: Cross multiply
    706,532.79x = 974,994.40 × 400,637.10
  4. Step 4: Simplify right side
    706,532.79x = 390,618,933,089.27
  5. Step 5: Solve for x
    x = 390,618,933,089.27/706,532.79
  6. Step 6: Final answer
    x = 552,867.38

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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.