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Finding the Fourth Proportional to 630,976.48, 870,735.68 and 359,038.24

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Solution

The fourth proportional to 630,976.48, 870,735.68 and 359,038.24 is: 495,466.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,976.48 : 870,735.68 = 359,038.24 : x
  2. Step 2: Convert to fraction form
    630,976.48/870,735.68 = 359,038.24/x
  3. Step 3: Cross multiply
    630,976.48x = 870,735.68 × 359,038.24
  4. Step 4: Simplify right side
    630,976.48x = 312,627,406,052.40
  5. Step 5: Solve for x
    x = 312,627,406,052.40/630,976.48
  6. Step 6: Final answer
    x = 495,466.02

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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.