Home / 630,917.04-870,715.20-358,996.38

Finding the Fourth Proportional to 630,917.04, 870,715.20 and 358,996.38

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Solution

The fourth proportional to 630,917.04, 870,715.20 and 358,996.38 is: 495,443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,917.04 : 870,715.20 = 358,996.38 : x
  2. Step 2: Convert to fraction form
    630,917.04/870,715.20 = 358,996.38/x
  3. Step 3: Cross multiply
    630,917.04x = 870,715.20 × 358,996.38
  4. Step 4: Simplify right side
    630,917.04x = 312,583,604,810.98
  5. Step 5: Solve for x
    x = 312,583,604,810.98/630,917.04
  6. Step 6: Final answer
    x = 495,443.28

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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.