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Finding the Fourth Proportional to 630,674.42, 870,350.99 and 358,735.32

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Solution

The fourth proportional to 630,674.42, 870,350.99 and 358,735.32 is: 495,066.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,674.42 : 870,350.99 = 358,735.32 : x
  2. Step 2: Convert to fraction form
    630,674.42/870,350.99 = 358,735.32/x
  3. Step 3: Cross multiply
    630,674.42x = 870,350.99 × 358,735.32
  4. Step 4: Simplify right side
    630,674.42x = 312,225,640,666.98
  5. Step 5: Solve for x
    x = 312,225,640,666.98/630,674.42
  6. Step 6: Final answer
    x = 495,066.29

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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.