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Finding the Fourth Proportional to 630,526.61, 870,100.36 and 358,556.76

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Solution

The fourth proportional to 630,526.61, 870,100.36 and 358,556.76 is: 494,793.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,526.61 : 870,100.36 = 358,556.76 : x
  2. Step 2: Convert to fraction form
    630,526.61/870,100.36 = 358,556.76/x
  3. Step 3: Cross multiply
    630,526.61x = 870,100.36 × 358,556.76
  4. Step 4: Simplify right side
    630,526.61x = 311,980,365,956.43
  5. Step 5: Solve for x
    x = 311,980,365,956.43/630,526.61
  6. Step 6: Final answer
    x = 494,793.34

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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.