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Finding the Fourth Proportional to 672,020.80, 1,006,864.80 and 630,030.40

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Solution

The fourth proportional to 672,020.80, 1,006,864.80 and 630,030.40 is: 943,952.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,020.80 : 1,006,864.80 = 630,030.40 : x
  2. Step 2: Convert to fraction form
    672,020.80/1,006,864.80 = 630,030.40/x
  3. Step 3: Cross multiply
    672,020.80x = 1,006,864.80 × 630,030.40
  4. Step 4: Simplify right side
    672,020.80x = 634,355,432,689.92
  5. Step 5: Solve for x
    x = 634,355,432,689.92/672,020.80
  6. Step 6: Final answer
    x = 943,952.08

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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.