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Finding the Fourth Proportional to 660,075.96, 910,880.46 and 358,263.48

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Solution

The fourth proportional to 660,075.96, 910,880.46 and 358,263.48 is: 494,390.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,075.96 : 910,880.46 = 358,263.48 : x
  2. Step 2: Convert to fraction form
    660,075.96/910,880.46 = 358,263.48/x
  3. Step 3: Cross multiply
    660,075.96x = 910,880.46 × 358,263.48
  4. Step 4: Simplify right side
    660,075.96x = 326,335,203,463.60
  5. Step 5: Solve for x
    x = 326,335,203,463.60/660,075.96
  6. Step 6: Final answer
    x = 494,390.38

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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.