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Finding the Fourth Proportional to 665,900.40, 918,946.10 and 364,094.40

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Solution

The fourth proportional to 665,900.40, 918,946.10 and 364,094.40 is: 502,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,900.40 : 918,946.10 = 364,094.40 : x
  2. Step 2: Convert to fraction form
    665,900.40/918,946.10 = 364,094.40/x
  3. Step 3: Cross multiply
    665,900.40x = 918,946.10 × 364,094.40
  4. Step 4: Simplify right side
    665,900.40x = 334,583,128,911.84
  5. Step 5: Solve for x
    x = 334,583,128,911.84/665,900.40
  6. Step 6: Final answer
    x = 502,452.21

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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.