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Finding the Fourth Proportional to 570,907.40, 856,490.70 and 334,128.20

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Solution

The fourth proportional to 570,907.40, 856,490.70 and 334,128.20 is: 501,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,907.40 : 856,490.70 = 334,128.20 : x
  2. Step 2: Convert to fraction form
    570,907.40/856,490.70 = 334,128.20/x
  3. Step 3: Cross multiply
    570,907.40x = 856,490.70 × 334,128.20
  4. Step 4: Simplify right side
    570,907.40x = 286,177,695,907.74
  5. Step 5: Solve for x
    x = 286,177,695,907.74/570,907.40
  6. Step 6: Final answer
    x = 501,268.15

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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.