Home / 686,938.65-1,030,407.98-313,690.65

Finding the Fourth Proportional to 686,938.65, 1,030,407.98 and 313,690.65

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Solution

The fourth proportional to 686,938.65, 1,030,407.98 and 313,690.65 is: 470,535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,938.65 : 1,030,407.98 = 313,690.65 : x
  2. Step 2: Convert to fraction form
    686,938.65/1,030,407.98 = 313,690.65/x
  3. Step 3: Cross multiply
    686,938.65x = 1,030,407.98 × 313,690.65
  4. Step 4: Simplify right side
    686,938.65x = 323,229,347,442.93
  5. Step 5: Solve for x
    x = 323,229,347,442.93/686,938.65
  6. Step 6: Final answer
    x = 470,535.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.