Home / 698,156,670,899.60-963,479,977,979.40-405,158,908,823.12

Finding the Fourth Proportional to 698,156,670,899.60, 963,479,977,979.40 and 405,158,908,823.12

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Solution

The fourth proportional to 698,156,670,899.60, 963,479,977,979.40 and 405,158,908,823.12 is: 559,133,089,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,156,670,899.60 : 963,479,977,979.40 = 405,158,908,823.12 : x
  2. Step 2: Convert to fraction form
    698,156,670,899.60/963,479,977,979.40 = 405,158,908,823.12/x
  3. Step 3: Cross multiply
    698,156,670,899.60x = 963,479,977,979.40 × 405,158,908,823.12
  4. Step 4: Simplify right side
    698,156,670,899.60x = 390,362,496,551,057,394,499,584
  5. Step 5: Solve for x
    x = 390,362,496,551,057,394,499,584/698,156,670,899.60
  6. Step 6: Final answer
    x = 559,133,089,780.64

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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.