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Finding the Fourth Proportional to 630,128.70, 943,443.45 and 612,632.70

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Solution

The fourth proportional to 630,128.70, 943,443.45 and 612,632.70 is: 917,248.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,128.70 : 943,443.45 = 612,632.70 : x
  2. Step 2: Convert to fraction form
    630,128.70/943,443.45 = 612,632.70/x
  3. Step 3: Cross multiply
    630,128.70x = 943,443.45 × 612,632.70
  4. Step 4: Simplify right side
    630,128.70x = 577,984,308,070.82
  5. Step 5: Solve for x
    x = 577,984,308,070.82/630,128.70
  6. Step 6: Final answer
    x = 917,248.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.