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Finding the Fourth Proportional to 488,547.40, 732,821.10 and 405,603.40

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Solution

The fourth proportional to 488,547.40, 732,821.10 and 405,603.40 is: 608,405.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,547.40 : 732,821.10 = 405,603.40 : x
  2. Step 2: Convert to fraction form
    488,547.40/732,821.10 = 405,603.40/x
  3. Step 3: Cross multiply
    488,547.40x = 732,821.10 × 405,603.40
  4. Step 4: Simplify right side
    488,547.40x = 297,234,729,751.74
  5. Step 5: Solve for x
    x = 297,234,729,751.74/488,547.40
  6. Step 6: Final answer
    x = 608,405.10

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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.