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Finding the Fourth Proportional to 630,977.48, 870,737.06 and 359,039.24

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Solution

The fourth proportional to 630,977.48, 870,737.06 and 359,039.24 is: 495,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,977.48 : 870,737.06 = 359,039.24 : x
  2. Step 2: Convert to fraction form
    630,977.48/870,737.06 = 359,039.24/x
  3. Step 3: Cross multiply
    630,977.48x = 870,737.06 × 359,039.24
  4. Step 4: Simplify right side
    630,977.48x = 312,628,772,262.23
  5. Step 5: Solve for x
    x = 312,628,772,262.23/630,977.48
  6. Step 6: Final answer
    x = 495,467.40

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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.