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Finding the Fourth Proportional to 630,975.48, 870,734.34 and 359,037.24

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Solution

The fourth proportional to 630,975.48, 870,734.34 and 359,037.24 is: 495,464.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,975.48 : 870,734.34 = 359,037.24 : x
  2. Step 2: Convert to fraction form
    630,975.48/870,734.34 = 359,037.24/x
  3. Step 3: Cross multiply
    630,975.48x = 870,734.34 × 359,037.24
  4. Step 4: Simplify right side
    630,975.48x = 312,626,054,206.82
  5. Step 5: Solve for x
    x = 312,626,054,206.82/630,975.48
  6. Step 6: Final answer
    x = 495,464.66

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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.