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Finding the Fourth Proportional to 570,075.86, 786,694.32 and 315,427.05

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Solution

The fourth proportional to 570,075.86, 786,694.32 and 315,427.05 is: 435,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,075.86 : 786,694.32 = 315,427.05 : x
  2. Step 2: Convert to fraction form
    570,075.86/786,694.32 = 315,427.05/x
  3. Step 3: Cross multiply
    570,075.86x = 786,694.32 × 315,427.05
  4. Step 4: Simplify right side
    570,075.86x = 248,144,668,609.36
  5. Step 5: Solve for x
    x = 248,144,668,609.36/570,075.86
  6. Step 6: Final answer
    x = 435,283.59

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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.