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Finding the Fourth Proportional to 630,730.03, 870,507.11 and 401,047.89

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Solution

The fourth proportional to 630,730.03, 870,507.11 and 401,047.89 is: 553,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,730.03 : 870,507.11 = 401,047.89 : x
  2. Step 2: Convert to fraction form
    630,730.03/870,507.11 = 401,047.89/x
  3. Step 3: Cross multiply
    630,730.03x = 870,507.11 × 401,047.89
  4. Step 4: Simplify right side
    630,730.03x = 349,115,039,695.50
  5. Step 5: Solve for x
    x = 349,115,039,695.50/630,730.03
  6. Step 6: Final answer
    x = 553,509.46

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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.