Home / 356,285,688,430.32-491,676,193,779.48-209,804,540,690.16

Finding the Fourth Proportional to 356,285,688,430.32, 491,676,193,779.48 and 209,804,540,690.16

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Solution

The fourth proportional to 356,285,688,430.32, 491,676,193,779.48 and 209,804,540,690.16 is: 289,531,410,758.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,285,688,430.32 : 491,676,193,779.48 = 209,804,540,690.16 : x
  2. Step 2: Convert to fraction form
    356,285,688,430.32/491,676,193,779.48 = 209,804,540,690.16/x
  3. Step 3: Cross multiply
    356,285,688,430.32x = 491,676,193,779.48 × 209,804,540,690.16
  4. Step 4: Simplify right side
    356,285,688,430.32x = 103,155,898,004,189,904,633,856
  5. Step 5: Solve for x
    x = 103,155,898,004,189,904,633,856/356,285,688,430.32
  6. Step 6: Final answer
    x = 289,531,410,758.21

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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.