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Finding the Fourth Proportional to 706,729.45, 975,281.82 and 400,865.35

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Solution

The fourth proportional to 706,729.45, 975,281.82 and 400,865.35 is: 553,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,729.45 : 975,281.82 = 400,865.35 : x
  2. Step 2: Convert to fraction form
    706,729.45/975,281.82 = 400,865.35/x
  3. Step 3: Cross multiply
    706,729.45x = 975,281.82 × 400,865.35
  4. Step 4: Simplify right side
    706,729.45x = 390,956,688,122.94
  5. Step 5: Solve for x
    x = 390,956,688,122.94/706,729.45
  6. Step 6: Final answer
    x = 553,191.45

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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.