Home / 771,368.64-1,157,018.40-210,401.28

Finding the Fourth Proportional to 771,368.64, 1,157,018.40 and 210,401.28

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Solution

The fourth proportional to 771,368.64, 1,157,018.40 and 210,401.28 is: 315,592.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,368.64 : 1,157,018.40 = 210,401.28 : x
  2. Step 2: Convert to fraction form
    771,368.64/1,157,018.40 = 210,401.28/x
  3. Step 3: Cross multiply
    771,368.64x = 1,157,018.40 × 210,401.28
  4. Step 4: Simplify right side
    771,368.64x = 243,438,152,343.55
  5. Step 5: Solve for x
    x = 243,438,152,343.55/771,368.64
  6. Step 6: Final answer
    x = 315,592.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.