Home / 565,869.48-780,916.38-311,237.16

Finding the Fourth Proportional to 565,869.48, 780,916.38 and 311,237.16

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Solution

The fourth proportional to 565,869.48, 780,916.38 and 311,237.16 is: 429,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,869.48 : 780,916.38 = 311,237.16 : x
  2. Step 2: Convert to fraction form
    565,869.48/780,916.38 = 311,237.16/x
  3. Step 3: Cross multiply
    565,869.48x = 780,916.38 × 311,237.16
  4. Step 4: Simplify right side
    565,869.48x = 243,050,196,308.68
  5. Step 5: Solve for x
    x = 243,050,196,308.68/565,869.48
  6. Step 6: Final answer
    x = 429,516.35

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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.