Home / 326,428,030.40-489,642,045.60-84,090,934.40

Finding the Fourth Proportional to 326,428,030.40, 489,642,045.60 and 84,090,934.40

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Solution

The fourth proportional to 326,428,030.40, 489,642,045.60 and 84,090,934.40 is: 126,136,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,428,030.40 : 489,642,045.60 = 84,090,934.40 : x
  2. Step 2: Convert to fraction form
    326,428,030.40/489,642,045.60 = 84,090,934.40/x
  3. Step 3: Cross multiply
    326,428,030.40x = 489,642,045.60 × 84,090,934.40
  4. Step 4: Simplify right side
    326,428,030.40x = 41,174,457,136,031,416
  5. Step 5: Solve for x
    x = 41,174,457,136,031,416/326,428,030.40
  6. Step 6: Final answer
    x = 126,136,401.60

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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.