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Finding the Fourth Proportional to 708,275.70, 977,143.02 and 435,870.68

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Solution

The fourth proportional to 708,275.70, 977,143.02 and 435,870.68 is: 601,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,275.70 : 977,143.02 = 435,870.68 : x
  2. Step 2: Convert to fraction form
    708,275.70/977,143.02 = 435,870.68/x
  3. Step 3: Cross multiply
    708,275.70x = 977,143.02 × 435,870.68
  4. Step 4: Simplify right side
    708,275.70x = 425,907,992,584.65
  5. Step 5: Solve for x
    x = 425,907,992,584.65/708,275.70
  6. Step 6: Final answer
    x = 601,330.80

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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.