Home / 513,142.10-708,155.79-340,762.05

Finding the Fourth Proportional to 513,142.10, 708,155.79 and 340,762.05

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Solution

The fourth proportional to 513,142.10, 708,155.79 and 340,762.05 is: 470,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,142.10 : 708,155.79 = 340,762.05 : x
  2. Step 2: Convert to fraction form
    513,142.10/708,155.79 = 340,762.05/x
  3. Step 3: Cross multiply
    513,142.10x = 708,155.79 × 340,762.05
  4. Step 4: Simplify right side
    513,142.10x = 241,312,618,719.77
  5. Step 5: Solve for x
    x = 241,312,618,719.77/513,142.10
  6. Step 6: Final answer
    x = 470,264.71

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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.