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Finding the Fourth Proportional to 708,261.71, 977,401.35 and 385,971.89

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Solution

The fourth proportional to 708,261.71, 977,401.35 and 385,971.89 is: 532,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,261.71 : 977,401.35 = 385,971.89 : x
  2. Step 2: Convert to fraction form
    708,261.71/977,401.35 = 385,971.89/x
  3. Step 3: Cross multiply
    708,261.71x = 977,401.35 × 385,971.89
  4. Step 4: Simplify right side
    708,261.71x = 377,249,441,461.05
  5. Step 5: Solve for x
    x = 377,249,441,461.05/708,261.71
  6. Step 6: Final answer
    x = 532,641.31

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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.