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Finding the Fourth Proportional to 630,100.14, 869,504 and 358,130.28

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Solution

The fourth proportional to 630,100.14, 869,504 and 358,130.28 is: 494,200.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,100.14 : 869,504 = 358,130.28 : x
  2. Step 2: Convert to fraction form
    630,100.14/869,504 = 358,130.28/x
  3. Step 3: Cross multiply
    630,100.14x = 869,504 × 358,130.28
  4. Step 4: Simplify right side
    630,100.14x = 311,395,710,981.12
  5. Step 5: Solve for x
    x = 311,395,710,981.12/630,100.14
  6. Step 6: Final answer
    x = 494,200.35

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1.5x scale

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.