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Finding the Fourth Proportional to 660,223.84, 911,109.80 and 358,417.84

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Solution

The fourth proportional to 660,223.84, 911,109.80 and 358,417.84 is: 494,617.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,223.84 : 911,109.80 = 358,417.84 : x
  2. Step 2: Convert to fraction form
    660,223.84/911,109.80 = 358,417.84/x
  3. Step 3: Cross multiply
    660,223.84x = 911,109.80 × 358,417.84
  4. Step 4: Simplify right side
    660,223.84x = 326,558,006,518.83
  5. Step 5: Solve for x
    x = 326,558,006,518.83/660,223.84
  6. Step 6: Final answer
    x = 494,617.11

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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.