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Finding the Fourth Proportional to 551,570.04, 760,504.44 and 398,363.40

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Solution

The fourth proportional to 551,570.04, 760,504.44 and 398,363.40 is: 549,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,570.04 : 760,504.44 = 398,363.40 : x
  2. Step 2: Convert to fraction form
    551,570.04/760,504.44 = 398,363.40/x
  3. Step 3: Cross multiply
    551,570.04x = 760,504.44 × 398,363.40
  4. Step 4: Simplify right side
    551,570.04x = 302,957,134,433.50
  5. Step 5: Solve for x
    x = 302,957,134,433.50/551,570.04
  6. Step 6: Final answer
    x = 549,263.22

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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.