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Finding the Fourth Proportional to 570,068.96, 786,352.40 and 376,478.45

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Solution

The fourth proportional to 570,068.96, 786,352.40 and 376,478.45 is: 519,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,068.96 : 786,352.40 = 376,478.45 : x
  2. Step 2: Convert to fraction form
    570,068.96/786,352.40 = 376,478.45/x
  3. Step 3: Cross multiply
    570,068.96x = 786,352.40 × 376,478.45
  4. Step 4: Simplify right side
    570,068.96x = 296,044,732,705.78
  5. Step 5: Solve for x
    x = 296,044,732,705.78/570,068.96
  6. Step 6: Final answer
    x = 519,313.90

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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.